Field Evaluation of Nitrogen Enriched Phosphocompost Prepared from Green Biomass of Lantana camara in Wheat

摘要

The nitrogen enriched phosphocompost was prepared utilizing the abundantly available green biomass of Lantana camara and supplemented with 12.5 and 25.0 per cent levels of rock phosphate, 1.0% fertilizer nitrogen (urea), 5.0 and 10.0 per cent pyrite or by inoculation with Azotobacter chroococcum and Aspergillus awamori. The compost mix-up was decomposed for 90 days and analyzed for its quality parameters like organic carbon, total nitrogen, ammonical & nitrate nitrogen, citrate soluble & total phosphorous, pH. Enrichment of green biomass of lantana with rock phosphate (12.5%), fertilizer N (1%) and pyrite (10%) produced high quality of phosphocompost with higher citric acid soluble P and N content and lower C: N ratio. Inoculation of phosphocompostwith A. awamori and A. chroococcum proved equally beneficial in improving quality parameters of compost. Its performance was then evaluated in wheat crop in various combinations with farmyard manure (FYM) and recommended fertilizer dose. The applicationof this compost in wheat crop along with 75 per cent recommended fertilizer N recorded higher crop yield and nutrient uptake, which was statistically at par with 100 per cent recommended dose of NPK, showing thereby a net saving of 25 per cent N fertilizer use with 100 per cent substitution of phosphatic fertilizer.